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How large are economic forecast errors?

  • Stephen K. McNees
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    Opinion about the reliability of economic forecasts ranges widely. Some argue that they are literally worthless, at the same time that most forecasters can point to a sequence of near perfect predictions. How much confidence should one place in economic forecasts? The errors vary with many factors. ; A crucial determinant of the size of forecast errors is the forecast period; some periods are very difficult to predict while others are relatively easy. By far the largest errors were the sustained underestimations of the acceleration of inflation in 1973-75 and again in 1978-80. In addition, variations in the difficulty of predicting different variables can be illustrated by examining the forecasts. The results show drastic differences among variables in the forecasters’ ability to outperform a naive standard of comparison. Finally, much of the interest in forecast accuracy stems from the wish to know "Who is the best forecaster?" Even a cursory examination of the information in this article shows that no single forecaster dominates all outliers for all, or even most, of the variables.

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    File URL: http://www.bostonfed.org/economic/neer/neer1992/neer492c.pdf
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    Article provided by Federal Reserve Bank of Boston in its journal New England Economic Review.

    Volume (Year): (1992)
    Issue (Month): Jul ()
    Pages: 25-42

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    Handle: RePEc:fip:fedbne:y:1992:i:jul:p:25-42
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